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 长波黑光灯用于古董的检验Uses of Blacklights for Antique inspection

发布时间:2017-11-21 00:00:00      发布人:   浏览量:127

 

Uses of Blacklights(Long Wavelength Ultraviolet Lights)Black lights produce Long wave Ultra Violet, or UV (320 nm - 400 nm). Many materials fluoresce under ultraviolet lighting producing colors or light that our eyes can see, and making things that might go undetected visible to us. Blacklight fluorescent inspection processes make jobs easier for document inspectors, quality control engineers, forensic scientists, fire officers and auction houses to name but a few. With UV blacklight, hairline cracks can be detected in aircraft undercarriages, automotive steering systems and many other life-critical components. Portable Blacklight (6", 4 watt, high wavelength UV light) ,In the field of forensics UV blacklight helps unearth vital evidence at crime scenes and plays an important role in identifying the cause of fires. Inspection of works of art under UV blacklight can reveal imperfections and evidences of restoration and repairs to art, pottery, glass and detecting old from reproduction -- an important aspect of authentication for valuation and sale. Most commonly available blacklights emit Ultra Violet light at a wavelength just above the visible range. Typically, this is around 340 nm while the visible range is roughly 400 nm to 700 nm. Blacklights produce fluorescence which is kind of magical. You point one light at certain targets and totally different colors appear. One characteristic of fluorescence is the intense, highly saturated colors that it produces making the object appear to have pure colors.

长波黑光灯的应用(长波长紫外线灯)黑光灯产生长波紫外线(320 nm - 400 nm)。许多材料在紫外线照射下发出荧光,发出我们的眼睛可以看到的颜色或光线,并且使可能不被察觉的事物可见。黑光荧光检测流程使文件检查人员,质量控制工程师,法医科学家,消防官员和拍卖行更容易工作,仅举几例。使用紫外线黑光灯,可以在飞机起落架,汽车转向系统和许多其他生命关键部件中检测到细纹。便携式黑光灯(6“,4瓦,高波长紫外灯),在法医领域,紫外线黑光灯有助于在犯罪现场发现重要证据,并在识别火灾原因方面发挥重要作用。揭示了艺术品,陶器,玻璃的恢复和修复的缺陷和证据,以及从生殖检测到的老旧问题 - 这是验证估价和销售的一个重要方面,大多数常见的黑光灯在可见光范围内发射紫外光,这是约340 nm,而可见光范围大约是400 nm到700 nm,Blacklights产生的荧光是一种神奇的,你指向某一个目标的一个光线,并出现完全不同的颜色,荧光的一个特点是强烈,高饱和的颜色它产生使对象看起来有纯净的颜色。

 

Black light uses黑光灯的应用:

•Antique inspection古董检查
Black light testing is a common practice used to authenticate antiques, to determine authenticity and the extent of repairs. Blacklights are used in evaluating antiques because the ultraviolet rays they produce react differently to different materials. Because of this interesting characteristic, things that are invisible to the naked eye become visible under the blacklight. Different chemical properties become apparent under a blacklight, modern paint will fluoresce or glow under a black light, older paints will not, you can use this to determine whether a painted object is an antique or a newer reproduction as well as to determine whether a piece has been "touched up" and if so, how extensive was the repair. The same technique can be used to detect repairs on antique porcelain as the old finish will not glow under a blacklight, and the newer material in the repair will.
Some antique glassware will glow under the blacklight as well, Vaseline glass will glow because it contains uranium oxide. A blacklight can be used to test many types of antiques. Here are some examples: Cut Glass: Authentic American Brilliant period cut glass fluoresces yellow; reproductions have no reaction or show a blue-white. You should pre-test to gain experience and remember the blacklight is just another tool to use in determination of authenticity. Cast Iron: Most new paint on most new cast iron fluoresces; old paint on old cast iron rarely fluoresces. You can also detect newly painted repairs as well.
黑光测试是用于验证古董,以确定真实性和修复程度的常见做法。黑光用于评估古董,因为它们产生的紫外线对不同的材料反应不同。由于这个有趣的特点,肉眼看不见的东西在黑光下变得可见。不同的化学性质在黑光下变得明显,现代的油漆会在黑光下发出荧光或发光,而旧的油漆不会,你可以用它来确定被涂物体是否是古董或更新的复制品,已经“摸起来”了,如果是这样的话,修理的范围有多广泛。同样的技术可以用来检测古董瓷器的修复,因为旧的饰面在黑光下不会发光,修复后的新材料也会发生。一些古色古香的玻璃器皿也会在黑光下发光,凡士林玻璃会发光,因为它含有氧化铀。黑光可以用来测试许多类型的古董。这里有一些例子:切割玻璃:正宗的美国辉煌的时期切割玻璃发出黄色;复制品没有反应或呈现蓝白色。你应该预先测试,以获得经验,记住黑光是用于确定真实性的另一个工具。铸铁:大多数新铸铁发荧光的新涂料;旧铸铁上的旧油漆很少发出荧光。你也可以检测到新的修复。

painting_under_UV.jpg

 Art inspection艺术拼检查
In works of art, modern paint will fluoresce or glow under a black light, older paints will not. Thus, pictures that have been "touched up" with modern paint will glow.  Repairs or hairline cracks may show and become more apparent under blacklight.  Paper Products: Most paper products--like post cards, books, signs, photos papers, etc.--made before the late 1930s-WW2 era rarely fluorescent. Paper products made since 1950, however generally fluoresce brightly due to large amounts of chemical bleaches and dyes.在艺术作品中,现代涂料会在黑光下发出荧光或发光,而旧颜料则不会。 因此,用现代涂料“抚摸”的照片将会发光。 在黑光下,维修或发条裂缝可能会显现并变得更加明显。纸制品:二十世纪三十年代末以前制造的大多数纸制品,如明信片,书籍,标志,照片纸等 - 二战时期很少发荧光。 由于大量化学漂白剂和染料,自1950年以来制造的纸制品通常发出明亮的荧光。


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